Fluid-pressure brake mechanism.



R. A. BHILBRICK.

FLUID PRESSURE BRAKE MBGEANISM.

APPLIOATION'TILED FEB. 21, 1914.

Patented Dec. 29, 1914.

3mm/nico@ @cum-eo a. PHLBRLCK PATIENT '@IFFIQE;

.RICHARD A. PHILBR-ICK, OF FREDONIA, KANSAS. i

FLUID-PRESSURE BRAKE MECHANISM.

1,12s,oo1.

Specification of Letters Patent.

Patented Dec. 29, 19141.

Application ed February 21, 1914. Serial No. 820,348.

Be it known that I, RICHARD A. PHIL- BRICK, a citizen of the United States, residing at Fredonia, in the county of lWilson and State of Kansas, have invented certain new and useful Improvements in Fluid- Pressure Brake Mechanism, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in Huid pressure brake mechanism and has relation more particularly to a device of this general character including a triple valve; and the object of the invention is to provide a device of this general character having novel and improved means .interposed between the exhaust oi the triple valve and the auxiliary reservoir whereby the discharge from the triple valve may be closed independently of the position of the triple valve whereby the auxiliary reservoir may be recharged without the necessity of releasing the brakes.

he invention consists in the details of construction and in the combination and arrangement ot the several parts of my improved tluid pressure brakeA mechanism whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

"lhe novel features oi' the invention will be carefully defined in the appended claim.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein is disclosed a somewhat diagrammatic view in section of an embodiment oi my invention.

As disclosed in the accompanying drawings, l denotes an auxiliary reservoir and 2 a fragment ot a triple valve, such valve being herein disclosed as of the well known 1Vivestinghouse type IQ such valve being in communication, in the usual way, with the brake cylinder (not shown) and being also provided with the exhaust port 8.

In communication with the reservoir 1 through the medium of the line 4 is the casing 5 provided adjacent one extremity with the alined openings 6 and 7, the opening 6 affording a means whereby the casing may be placed in communication with the eX- haust port 3 of the triple valve 2 through the medium, as -herein disclosed, of the line 8.

Mounted for reciprocating movement within the casing 5 is the valve member 9 provided, as herein disclosed, with the transverse port 10 adapted to register with the opening's or ports 6 and 7 when the pressure within the auxiliary reservoir is substantially normal, such position of the valve member 9 being maintained by the pressure within such reservoir. In order that the pressure upon the valve member 9 will not force the port thereof out of register with the openings G and 7, I provide the inner walls of the casing 5 with the inwardly disposed projections or lugs l1 with which the adjacent face of the valve member 9 is adapted to Contact, as is clearly shown in the accompanying drawings, the positions of such projections or lugs 11 relative to the openings 6 and 7 being such as to assure proper register of the port l0 with the openings 6 and 'i'. The pressure within the reservoir against the valve member 9 also overcomes the tension of the expansible member l), herein shown as a coil spring. interposed between the valve member 9 and the adjacent head 14 ot' the casing whereby upon reduction of the pressure within the auxiliary reservoir l, suoli expansible member 12 will serve to force the valve member 9 into Contact with the valve seat 15 formed within the casing 5 forwardly of the valve member, the positioning of the valve seat l5 relative to the openings 6 and 7 being such that when the valve member is in contact therewith such member serves to obstruct or close the openings 6 and 7 whereby while the valve member 9 is in such position the engineer can conveniently recharge the auxiliary reservoir until the pressure therein has returned to substantially normal whereupon the valve member 9 will automatically return to the position illustrated in the drawings.

In order to assure a more effective engagement of the valve member 9 with the valve seat l5, I nd it of advantage to provide such valve seat with the gasket 16 resting upon the valve seat, which valve seat is disposed in a plane substantially perpendicular to the bore of the casing. By this particular arrangement of the valve seat an important function is created, as it will be seen that when the valve member 9 is in enthought to be obvious gagement with the valve seat, or more particularly the gasket 16 thereon, the face of the valve is reduced whereby it will be seen that greater pressure will be required to initially move the valve member than is required to maintain it in its released position. It will also be observed that as soon as the valve member 9 leaves its seat 15, its entire surface is exposed whereby it is assured that it moves into full released position substantially instantaneously.

It will be observed that the head 14 of the casing 5 is so engaged, as indicated at 17, with the casing as to be capable of adjustment longitudinally thereof lwhereby the tension of the expansible member 12 may be varied to control or regulate the degree of pressure at which the valve member 9 may be moved into released position and in order to maintain justed position, I employ, as herein disclosed, the conventional adjusting nut 18.

From the foregoing description, it is that a fluid pressure brake mechanism constructed in accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be applied and by reason of the substantially automatic manner in which the retaining or'controlling valve interposed between the triple valve and the auxiliary reservoir operates, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and Copies of this patent may be obtained for the head 14 in its ad-4 spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice.

I claim:

In a uid pressure brake mechanism including an auxiliary reservoir and a triple valve, of a casing provided with opposed openings, means coacting with one of such openings to afford a communication between the casing and the exhaust port of the triple valve, the second of such openings affording a communication with the atmosphere, a second connection between the casing and the auxiliary reservoir, a valve member mounted within the casing and provided with a port adapted to register with the alined openings of the casing, such position of the valve member being caused by the pressure within the auxiliary reservoir, regulatable means for causing such valve member to close the openings of the casing upon decrease of pressure within the auxiliary reservoir, and inwardly disposed lugs carried by the inner wall of the casing with which the valve member is adapted to contact to limit the movement of such member under the pressure within the auxiliary reservoir.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

RICHARD A. PHILBRroK.

Witnesses ANDREW C. ELY, BENJAMIN JOHNSON.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

